import java.util.Scanner;


public class bf {
	
	static byte[] vals;
	static int ndx; 
	static Scanner in = new Scanner(System.in);
	public static void main(String[]args){
		vals = new byte[1000];
		ndx = 0;
		
		System.out.println("exp? ");
		String exp = in.nextLine();
		
		System.out.println(exp.getBytes()[0]);
		
		
	}
}
